Subtle Effects

A Campfire

Spriting Dust Clouds

Villager Sleeping Zs

Glowstone Block Dust

Soul Fire

Fireflies in a swamp

Lingering potions

Vanilla vs Subtle Effects

Sparkling amethysts

Look closely

Beacon beams

Slime trails

Sleeping foxes

When a mob is sleeping, small Z effects will appear

Potion rings

Drinking a potion causes potion rings to appear

Ender eye placement rings

Falling leaves

Falling leaves can land on the ground and on water before fading out

Waterfalls

Splashes

Mobs falling in water or lava create splashes of their respective type

Geysers

Smoke, flame, and bubble geysers